B3204 Diagnostic Trouble Code

B3204 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code.

It is considered generic because it applies to all makes and models of vehicles, although specific repair steps may be different depending on your car model.

Symptoms

Symptoms of a B3204 diagnostic trouble code may include:

Excessive exhaust leak
Hesitation upon acceleration
Malfunction Indicator Lamp (MIL) illuminated
The light may stay on or light intermittently as the DPF regenerates. The engine will be sluggish on acceleration.

Possible Causes :

An air leak forward of the DPF will change the sensor readings resulting in the code
Rusty exhaust systems, cracked exhaust manifolds or damaged or missing gaskets or donuts will cause air leaks.
Low fuel pressure caused by a clogged filter, failing fuel pump, failed fuel pressure regulator or clogged or leaking injectors.

Repair Processes :

It should be pretty close to battery voltage (12 volts). If not, then this is the circuit that has the problem. With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Process Tips

Diagnostic trouble code B3204 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before B3204.

Fortunately, B3204 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

B3204 Trouble Code For Specific Cars

B3204 Ford Concept MAF Ground Malfunction
B3204 Chevrolet Corvette C4 Driver Side, Side mount Airbag Low capacitance on Squib
B3204 Mercedes B 200 ABS Hydraulic Pump Motor Circuit Failure
B3204 Chevrolet S-10 EIC Switch-2 Assembly Circuit Failure
B3204 Chevrolet Vivant Engine Coolant Temperature Circuit High Input
B3204 Bentley S2 Battery Voltage High
B3204 Pontiac Piranha Fan Secondary Low with Low Fan On